shoplist = ['apple','mango','milk','banana','coffee']
for i in shoplist:
    print(i)
shoplist.append('strawberry')
print(shoplist)
shoplist.sort()
print(shoplist)
print('the first thing is',shoplist[0])
print('我已经用掉了'+shoplist[0])
del shoplist[0]
print('剩下的商品有',shoplist)
